15957709640

素因数分解:

$2^3\times 5^1\times {\mathrm{398942741}}^1$

素因数の和:398942752

約数の個数: 16

約数和(自身を含む): 35904846780

約数和(自身を除く): 19947137140

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 398942741, 797885482, 1595770964, 1994713705, 3191541928, 3989427410, 7978854820, 15957709640]

約数ペア:

[(1, 15957709640), (2, 7978854820), (4, 3989427410), (5, 3191541928), (8, 1994713705), (10, 1595770964), (20, 797885482), (40, 398942741)]